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From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4767) Network issues can cause persistent RM UI outage
Date Thu, 22 Sep 2016 01:41:21 GMT

    [ https://issues.apache.org/jira/browse/YARN-4767?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15511795#comment-15511795
] 

Karthik Kambatla commented on YARN-4767:
----------------------------------------

The latest patch looks good to me. [~templedf] - is the javadoc related, and does it need
fixing? 

[~vinodkv] - from your comments here, I take it you are comfortable with the approach and
wanted the tests to be fixed. Would be nice if you could take another look, but otherwise
let me assume you are a +0 and commit it once the javadocs are cleared. 

> Network issues can cause persistent RM UI outage
> ------------------------------------------------
>
>                 Key: YARN-4767
>                 URL: https://issues.apache.org/jira/browse/YARN-4767
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: webapp
>    Affects Versions: 2.7.2
>            Reporter: Daniel Templeton
>            Assignee: Daniel Templeton
>            Priority: Critical
>         Attachments: YARN-4767.001.patch, YARN-4767.002.patch, YARN-4767.003.patch, YARN-4767.004.patch,
YARN-4767.005.patch, YARN-4767.006.patch, YARN-4767.007.patch, YARN-4767.008.patch, YARN-4767.009.patch,
YARN-4767.010.patch
>
>
> If a network issue causes an AM web app to resolve the RM proxy's address to something
other than what's listed in the allowed proxies list, the AmIpFilter will 302 redirect the
RM proxy's request back to the RM proxy.  The RM proxy will then consume all available handler
threads connecting to itself over and over, resulting in an outage of the web UI.



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